Rotary pump.



A. N. BAADE. ROTARY PUMP.

APPLICATION FILED JAN. 25. 191s.

Patented Oct. 6, 1914.

3 SHEETS-SHEET l.

i 4Awinning-"I A. N. BAADE.

ROTARY PUMP. APPLICATION FILED IAN. 25, 1'913 1,112,515. Patented.0@t.-6,1914j 3 SHEETS-SHEET 2.

GOOG

A.- N. BAADE. ROTARY PUMP.

, APPLICATION FILED JAN. 25, 1913. 1,1 12,515. Patented Oct. 6, 1914.

3 SHEETS-SHEET 3.

ANDREW N. AADFL 0F SPOKANE, WASHINGTON.

ROTARY PUMP.

Specification of Letters Patent.

Patented oct. 6, 1914.

Application filed January 25, 1913. Serial No. 744,187.

To all whom it may concern.'

Be it known that I, ANDREW N. Brunn, a citizen of the United States, residing at Spokane, in the county of Spokaneand State of Washington, have invented certain new and useful Improvements in Rotary Pumps, of which the following is a specification.

This invention relates to rotary pumps, and has special reference to pumps intended for irrigating purposes and which are suspended within a deep well so as to rotate about a vertical axis. f

One object of my present invention is to provide a pump in which the parts will be so constructed andv arranged that the rotating piston will be relieved of weight so that it will not unduly wear upon the casing or its supports. 'A

A further object of the invention is to provide an efficient system of lubrication whereby the piston and the parts working therein will be thoroughly lubricated so that the pump. may be operated easily and at a high speed without an excessive expenditure of power.

A further object of the invention -is to provide means whereby the pump will be supported concentrically within thelwell and out of cont-act with the sides of the same so that wear up n the pump cylinder from vibration and contact with the well casing will be avoided.-

A still further object of the invention is to provide means for supporting the pump whereby it may be readily adjusted within the well and the operating parts will be relieved of all supporting strainso that the friction between moving parts will be minimized.

The invention also has for its object the provision of a pump that maybev lowered into a small drilled well, thereby avoiding the expense of digging a large well; and an additional objectof the invention is to avoid the necessity of entering the well to start or stop thepump. l

A still further object of the invention is to provide novel means-for projecting and retracting the blades by which the water is drawn into and expelled from the pump cylinder, and, finally, the invention seeks to improve, generally, the construction and arrangement of a vertically disposed rotary pump to the end that the efficiency and durability of the same may hg, increased.

The several stated objects, and such other l plate objects as will incidentally appear from the following description, are attained in such an apparatus as is illustrated in the accompanying drawinfrs, and the invention consists in certain novel features which will be particularly pointed out in the claims fol lowing the description.

In the drawings-Figure 1 is an elevation of'my improved p'ump with a part broken away and in section; Fig. 2 is an enlarged vertical section through the pump cylinder and the piston mounted therein; Fig. 3 is a horizontalsection taken on the line 3-3 yof Fig. 2; Fig. 4 is a horizontal section taken on the line 4 4 of Fig. 2; Fig. 5 is a detail horizontal section taken on the line 5` of Fig. 2; Fig. 6 isa perspective view of the eccentric shaft, the

blades, and the supports for the blades, the

parts beingvshown free of the piston and with some of the retaining rings and ring segments separa-ted but in their proper relative positions; Fig. 7 is a detail plan View of theupper retainingihead with the shaft therein shown in section on,4 the line 7-7 of Fig'. 2; Fig. 8 is a similar view taken on the line 8-8 of Fig. 2; Fig. 9 is an enlarged detail verticalsection of the support for Athe upper end of the driving shaft.

In carrying out my present invention, I employ a supporting frame consisting of sills l which are placed upon\ the surface of the ground adjacent the mouth of the well, and rising fromthe said sills are posts or standards 2 having beams 3' secured to and extending across their upper ends. A plate -4 is secured upon the beams 3 and through the said plate and the beams is formed an opening or openings 'whi'ch are of considerably greater diameter than the driving shaft, so that, if the driving shaft support should be disposed at an angle or inclination, the shaft will not be caused to wear against the sides of the openings. Above the base plate 4 is disposed a supporting 5 through which bolts or studs 6 are threaded, the lower ends ofv said bolts or studs engaging sockets or recesses in the upper side of the base plate 4, so that, by rototing the studs or bolts', the supporting plate 5 may be raised or lowered. In the upper face of the plate '5' is form'ed a raceway 7 to receive balls or other anti-friction devices 8, and a second ring or plate 9 having a race-way in its under surface is fitted to the said balls yso as 'to move freely thereon.

A jacent its edge'with a segmental slot 29.

Through the said plates 5 and 9 openings 10 are formed in alinement with the openings 5 throughvthe beams 3 and the base plate 4. ln the upper face of the upper plate 9 at the center of the same is' a concaved recess 11 in which lits a collar or block |12 having a convex lower end and firmly se cured to the upper end of the driving shaft section 13. rlhe section 13 of the driving shaft is solid and extends downward through the several opeings 10and 5 to a coupling or union 14 by which it is lirmly connected to the upper end of the hollow driving shaft section 15, a pulley 16 being fitted securely upon the said shaft section 13 below the beams 3 andl connected by a power belt 17 with any convenient or"'preferred form of motor. A packing boX, indicated at 18, is litted around the shaft section 13 above the coupling 14 and this packing box is carried bythe upper end of a 'iT-coupling 19 by which the discharge pipe 20 is connected ing from the pump cylinder. The tubular casing or conductor 21 is composed of a series of sections which may be more or less according to the. depth of the well, and the meeting ends of the sections are connected by. collars 22 threaded onto the saine, as will be readily understood. A curb or other support 23 is secured to the sills 1 and the conductor 21"isconnected with the said curb -so as to remain stationary. rlhe lower extremity of the conductor or tubular casing 21 is threaded into the upper end of a reducing cap 24 which is rigidly secured to the upper end of a cylinder or casing 25 by long bolts or screws 26 inserted through an annular flange or shoulder 27 of the cap and entering the wall of thecylinder, as shown in Fig. 2 and as will be readily understood. The lower end of the reducing cap. 24, which is` also. the lower edge of the shoulder or flange 27 of the same, does not rest directl,Y upon the upper .end of the cylinder 25, but a head 28 is interposed between the cap and the cylinder and secured rigidly in place by the bolts 26, as clearly shown in Fig. 2. This head 28 extends entirely across the upfper end of the cylinder 25 so as to form a closure for the same and itis provided adwhich constitutes an outlet for the water, the innermost wall of the said slot being beveledor inclined, as shown at 30, so as to facilitate the `flow ofthe water into the cap 24 and toward the tubular conductor v 21-by which the water is conveyed .to the discharge pipe 20.y rThe hollow. member 15 of the driving shaft is provided with a plurality ofperforations or openings 31 at its upper and' lower ends sof'that the water may rise through the said shaft section as well as through the conductor 21 and, consequently, the friction of the. water against inname pump. The lower end of the driving shaft section 15 is secured by a collar or union 32 to the upper angular end 33 of a short shaft v34 which is journaled in the head 28 and a hub 35 formed thereon and has its lower end 36 projecting below the head and secured by brazing, welding, or any other 'well-known metal-working process to the cap or head 37 of the piston. YThis short shaft 34 is provided with a small axial passage, indicatedv in dotted lines at 38, through which lubricant may pass to escape between lthe lshaft and the bushing 39 around the same within the hub 35, so that the rotation fof the shaft within the said hub and the head 28 will be facilitated and the wear between these parts minimized.

with the conductor or tubular casing 21 ris- 5 ln the lower extremity of the shaft 34 is ,a small socket which is engaged by a cylindrical pin 40 rising from the upper end of an g eccentric shaft 41 whereby the said eccentric shaft 41 will be maintainedinits proper p0- -sition relative to the piston. ln the under face of the piston head or cap 37 is formed or secured a race-way 42 to receive balls or anti-friction devices 43 carried by aball-retainer 44 and'resting upon a lower raceway 45 which is supported by a shoulder 46 at Ethe upper end of the eccentric shaft 41. -The lower end of the said eccentric shaft is provided witha trunnion'47 which passes centrally through the lower head or cap 48 p of thepiston and has its lower extremity -fitted angularly in the lower cylinder head 49 and in a bracket or block 50 disposed against the under side of the said head 49 j and having a central boss 5l which lits withy in the said head. rllhe central angular open- ;ing of the bracket 50 also receives an angu- Ilar boss 52 on the upper side of a plate 53 .which is adjustably secured to the said bracket 50 by screws 54, as will be readily i understood on' reference to Fig. 2. A small aXial passage 55 is formed through the trunnion 47 and the boss 52 so that the lubricant which is fed to the boss through a tube 56 may pass upwardly through said trunnion and the eccentric shaft to the interior of the piston and lubricate the working parts. lt will be readily noted that the said fpassage 55 does not extend through the entire length of the eccentric shaft, as such construction wouldbe unnecessarily labor1ous and expensive. The passage 1s, however, diverted to the side of. the eccentric shaft `and leads into avby-pass tube 57 ein' tending parallel with the shaft Within the piston and having its upper end in communication with a similar passage 58 formed 'in the upper portion of the eccentric shaft.

the anti-friction bearings 43 and also to the interior of the piston. A branch 61 leads from the passage 55 for a similar purpose. The tube 56 supplies the 'lubricant to the .lower end of the eccentric shaft, as before stated and as will be readily understood upon reference to.Fig. 2 of 'the'drawings,

and this tube is composed of a series of sections connected by couplings 62 so that the tube may be of a length necessary to eX- te'nd to and beyond the mouth of the well where it is connected with a container 63 in which is a screw-operated plunger 64. It is to be understood that heavy or thick lubricant is to be employed and it will be fed into the interior of the piston through the tube 56 land the several passages, above described, so that it will be forced to the working parts and reach all surfaces which would be otherwise subjected to excessive wear.

A reducing cap 65, which is similar in all respects to the c ap 24, is secured against the lower head 49 and to the lowerend of the cylinder 25 by bolts 66. in the same manner as the bolts 26 secure the cap 24 and the head 28 to the cylinder. To the lower end of the cap 65 is secured the inlet tube 67 which is preferably in the form of a cylindrical screen having its lower end closed by an imperforate cap 68. The imperforate cap 68 will prevent the entrance of sand and gravel and other foreign matter through the lower end of the inlet tube and the screenlike construction of the said inlet tube will prevent the entrance of any large substances into the working mechanism of the pump.

Bv makingthe screen of a sufficient degree of fineness, it will be obvious that the water passing into the pump will be practically lfree of sand or other matter which would tend to wear away the workingparts, so that the pump will prove exceedingly durable. To the upper end of the inlet tube 67 1 secure a plurality of leaf-springs 69 which are bowed outwardly so as to bear against the side of the well or of the casing therein and thereby hold the pump against oscillation as it is being lowered into or removed from the well, so that Vthe liability of damage to the well or the casing will be minimized. The lower ends of the vsprings 69 play freely in loops 70 provided on the inlet tube near the lower end thereof so that the springs may expand more or less and' consequently, accommodate themselves to the diameter of the well and maintain the pump in a central vertical position within the well after it is lowered. It is to be understo'l that the pump is intended to be submerged in the water in the well so that the supply of water will be constant when the pump is in operation.

The piston caps or heads 37 and 48 are connected by a cylindrical piston body 71, the caps being secured to the opposite ends of the piston body by screws or studs 72 inserted through the heads or caps into theends of the body, as clearly shown in Fig. 2. The piston is provided with a plurality of longitudinal radial slots 73 in which blades 74 are mounted, the said blades be- 4ing projected and retracted as the piston rotates so as to produce a suction through the pump which will have the effect of drawing water into the cylinder through the lower end thereof and subsequently forcing the water from the cylinder through the upper end of the same. The blades 74 are carried by radial farms 75 mounted slidably in bushings 76 in the piston body near the upper and lower ends of the same. The inner ends of the arms 75 are reduced. as shown at 77, to fit between upper and lower rin'g segments 78 to which they are pivotally attached by pins or rivets 79, as will be readily understood. These ring segments 78 are mounted between retaining 'rings 8() which are fitted loosely around the eccentric shaft 41 and are provided on their opposed faces with peripheral flanges 81,

the space between the said flanges and the eccentric shaft forming a guiding chamber for the ring segments, as will be readily understood. The ring segments and the retaining rings are duplicated 4near the upper and lower ends of the eccentric shaft and the upper retainers are held against dropping'by a supporting ring 82 which is fixed upon the shaft below the lower ring of the upper pair of retaining rings and immediately above the lateral passage 59 for the lubricant. The lower retainer rings are supported upon a washer or supporting ring 83 which is in turn supported by the lower piston head 48, and a second supporting ring 84 is fitted upon the -eccentric shaft above the lower retaining rings and immediately below the lateral passage r61 for the lubricant. The ring segments 78 are of such radial dimension as to lit against the eccentric shaft and also against the peripheral 'flange of the adjacent retaining ring, but circumferentially they are. of such dimensions that they will be spaced apart when in position. They slot 85 similar to the Aslot 29 in' the upper head 28 and this slot 85 constitutes the water inlet for the cylinder. The slots 29 and 85 are disposed at opposite sides of a v 4.-. Lirama vertical rib or abutment 86 formed within the cylinder 25 and extend in opposite directions therefrom, the said abutment, consequently, serving to prevent the water passing directly from the inlet to the outlet. A wear-plate 87 is disposed against the abutment 86 and is secured in place by setscrews 88 threaded in the wall of the cylinder and having their inner ends fitted in the said wear-plate so that by turning the Set-screws the wear-plate may be adjusted to or from the piston and thereby prevent slippage or' the water without binding upon the piston and also providing a simple` means Jfor adjusting the parts to compensate for wear of the piston or the abutment. The oil tube 56 passes through the cylinder immediately adjacent this wear-plate 87 and a concave groove 88 is preferably provided in one side of the wear-plate to accommodate the said oil tube, an opening 56 being provided in the head 49 to accommodate the lower portion of theltube and the upper portion of the tube passing through the slot 29. At a point diametrically opposite the abutment 86, the cylinder is formed with a segmental enlargement or projection, indicated at 89, and to the inner face of this projection or enlargement is litted a wearplate 90, the said wear-plate being secured within-the cylinder by screws or 'bolts 91 inserted through the ends of the plate into the walls of the cylinder and the intermediate portion of the wear-plate being adjustable inwardly by set-screws 92 iitted in the wall of the cylinder and bearing against the outer face of the wear-plate, as shown in Fig. 4. It will be readily/ understood that by turning the set-screws-92 inwardly the intermediate portion' o't' the Wear-,plate will be driven somewhat nearer the piston so that the blades 74 may work close enough to the wear-plate to produce the proper suction through the pump cylinder and prevent slippage of the water without creating a retarding friction between the parts. The slots 29 and 85 extend from the opposite sides of the abutment 86 to the ends of the projection or enlargement 89.

In operation, the driving shaft is rotated through the medium of the'power applied directly to the upper solid end section thereof, and, as the lower end of the driving shaft is rigid with the upper piston head 37 and both piston heads are rmly secured to the piston body by the screws inserted thereinto, it will be seen at once that the rotationvof the driving shaft causes the piston to rotate between the cylinder heads 28 and 49 and within the cylinder body. As the blades 74 and the blade-carrying arms ,75 are mounted in the piston, they will necessarily follow the movement or the same, and, as the inner ends of the blade-carrying arms are connected to the ring segments held against the eccentric shaft by the retainers, it is obvious that the rotation of the piston will cause the blades to be projected as they approach the enlargement 89 of the cylinder and, consequently, a partial vacuum will becreated in rear of the blade which happens to be projected to the Wear-plate 90 and between the said blade and the abutment 86 so that water will be drawn through the inlet opening 85 into the cylinder. The `blades will be successively projected as they approach the wear-plate 90 and, consequently, will successively, take in the Water and force the same around to the opposite side of the enlargement` or projection 89, after which the water will escape through the upper seg mental slot 29, it being understood that as the blades force the water toward the slot 29 there will be a tendency to compress the water, which will be relieved only by the escape of the water through the said slot, inasmuch as the abutment 86 will prevent the water merely traveling in a circular path around the piston.

llt will be readily understood from the foregoing description, taken in connection .with the accompanying drawings, that I have provided'` a very compact and easily operated pump by the use of which asteady flow of water may be obtained at the mouth of a deep well, so that a field may b e irrigated or the water otherwise used at all |`times when needed. It will be readily noted thatI Atnhere is no carrying strain upon the piston and, consequently, the piston may rotateeasily and with the application of slight power. 'llhe driving shaft is supportedfrom its upper end by the adjustable collar or block 12 resting in the upperbearing plate 9, and, as the said bearing plate is free to move annularly upon the anti-friction devices 8, motion may be imparted to the shaft very readily and quickly. 'llhe supportingv screws or threaded studs 6 may be adjusted so that thevweight of the driving shaft will be entirely removed from the pist-on, and, should the said screws be adjusted unequally so that the supporting plate 5 would be given an inclination, the shaft would still maintain its vertical position owing to the fact that the collar'or block l2 may move about its seat in the upper bearing plate 9. By adjusting the screws 54 at the lower end of the cylinder, the eccentric shaft may be raised or lowered, inasmuch as the lower eX- tremity of this shaft rests upon the boss on the plate 53, and, as the raising or lowering of the eccentric shaft will raise or lower the piston, it will be readily seen that the weight or the piston is ,takenV o the lower cylinder head 49 and wear between those parts is obviated. The entire weight ofthe piston is carried by theanti-friction devices 43 which are supported by the upper end ofthe ecceneasily and at a high speed withoutrequiring any uneconomical operation of the motor. It will be` readily noted that the interior of the piston is hollow to accommodate the ring segments and the retaining rings therefor by and through which the eccentric shaft is caused to project and retract the blades and means are provided to distribute lubricant to all the moving parts,4 and this lubricant will also serve to prevent the entrance of iine sand or other abrading material to the moving surfaces.

The several parts of the device are very compactly arranged and repairs may be easily made when necessary.

Vhat I claim is 1. A rotary pump comprisingl a cylinder, heads forming closures for the upper and lower ends of said cylinder and provided with outlet and inlet openings respectively, an abutment within the. cylinder extending between said heads and disposed between said inlet and outlet openings, a stationary eccentric shaft supported by one of said heads, a piston working between the said heads and around said eccentric shaft, blades mounted radially in the said piston, and means connected with said blades and engagj ing th'e eccentric shaft for projecting the blades as they move from the abutment and retracting the Same as they move toward the abutment. f

2. A rotary pump comprising a cylinder,

a hollow piston mounted therein, means for rotatin the piston, an abutment extending longitu inally of the cylinder at one side thereof, a projection at the opposite side of.

the cylinder, blades carried bythe piston, and means comprising a stationary member supporting the piston and housed by and within the same for moving the blades outward as they approach the projection and moving them inwardly as they approach` the abutment.-

3. A rotary pump comprising a cylinder having upper and lower heads, longitudinal abutment extending between the heads; a hollow piston mounted between said heads, means for rotating the piston,

blades carried by the said piston', means housed within the Vpiston to project and re-` tract the said blades, and lubricant conveyer extending through the cylinder adj acent the abutment and communicating through the lower end of the cylinder with the interior of the piston. A

4. In a rotary pump, the combination of a cylinder having upper and lower heads, a ldriving shaft journaled in theupperhead of the cylinder and extending below the same, a hollowpiston rigid with the lower end of said drivin shaft and extending between the heads o the cylinder, means for -ried bythe piston,

an internal hollow rotating the said driving shaft, blades car-v a support for the piston seated in the lower head of the cylinder and extending to the upper end of the piston,

and means within the piston carried by said support to project and retract the blades.

5. In a rotary pump, the combination 'of a cylinder having upper and lower heads, a hollow piston fitted between said heads, a driving shaft extending through the upper head and rigid 4with the piston, a stationary eccentric shaft supported in the lower head of the cylinder and extending within the piston t-o support the same, blades mounted in the piston, and supports for the. said blades slidable radially in the piston and movable around the eccentric shaft whereby the blades will be projected and retracted.

6. In a rotary pump, the combination of a'cylinderhaving upper and lower heads, a hollow piston tted between the said heads, a driving shaft extending through the upper head and rigid with the piston, a support forl the piston carried by the lower head of the cylinder, and an anti-friction bearing in, terposed between the upper end of said support and the upper end of the piston.

7. In a rotary pump, the combination of a cylinder having upper and lower heads, a hollow piston tted between the said heads, means for rotating the piston, an eccentric shaft carried by the lower head of the cylinder and disposed within the piston, blades mounted in the piston rand extending longi tudinally thereof, blade-carrying arms slidable radially in the piston, retaining rings fitted around the eccentric shaft, and ring segments within said retaining rings pivoted to the inner ends of the blade-carrying arms. j

8. In a` rotary drum, the combination of a cylinder having upper and lower heads, ag

hollow piston between said heads, meansfor rotating the piston, an eccentric shaft held stationary within the piston, supporting rings fixed upon the said eccentric shaft,'re taining rings mounted y"on saidsupporting rings aroundY the eccentricv shaft, ring seg- `ments held to theeccentric shaft by the retaining rings, blade-supporting arms slidable radially in the piston and having their inner ends pivoted to the ring segments, and blades carried by the outer ends of the said arms. Y

9. In a rotaryv pump, the combination of a cylinder having upper and lower heads, a

iston between said heads, an eccentric' s aft held stationary within the hollow piston, retaining' rings fitted around said shaftand having peripheral flanges on theirV opposed faces, ring segments seated within said vrings between said anges and l slidable radially in the-pistonand having rae the eccentric shaft, bladefsupportingarms`- their inner ends fitted betweenandlpivoted to said ring segments, and blades carried by the outer ends of said arms.

l0. lin a rotary pump, the combination of a cylinder having upper and lower heads, a hollow piston between the said heads, a driving shaft for the piston extending through the upper head of the cylinder and rigid with the upper end of the piston, an eccentric shaft disposed within the piston and having its lower end tted in the lower head oi" the cylinder and its upper end provided with a stud fitting in the lower end of the driving shaft, blades carried by the piston, blade-supporting larms slidable radially in the piston, and means controlled by the eccentric shaft and acting on said arms to project and retract the blades.

ll. In a rotary pump, the combination of a cylinder having' upper and lower heads, a

hollow piston between the heads, means for rotating said piston, an eccentric shaft disposed within the piston and having its upper `end adapted to support the piston, a trnnnion extending from the lower end of the said shaft through the lower end of the piston and the lower head of the cylinder, a bracket onI the under side of the head having an angular engagement with said trunnion, and a supporting plate adjust-ably secured to the said bracket and having a boss fitting within the bracket and supporting the lower end of the eccentric' shaft..

In testimony whereof l affix my signature in presence of two witnesses.

ANDREW N. BAADE. [13. s] Witnesses:

HERBERT L. KIMBALL, LLOYD E. GANDY. 

